JPH0467481B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a special thinning machine for thinning natural wood, laminated wood, laminated wood, plywood, hard/semi-hard/
For manufacturing thin board materials by thinly cutting workpieces such as soft fiberboards, particle boards, bamboo materials, and fibrous materials such as wood wool cement boards and gypsum boards with a cutting blade. Regarding thinning machine.

(Prior art) Conventionally, when cutting a workpiece such as a wood material to produce a thin board, if a thick cutting blade is used, a large portion of the workpiece becomes shavings, resulting in a lot of waste. Become. Therefore, it is conceivable to use a thin cutting blade for cutting.
In this case, the relationship between the direction of rotation of the cutting blade and the direction of movement of the workpiece is made tight to prevent the groove created by cutting from becoming clogged with chips.

(Problem to be Solved by the Invention) However, when cutting a thick workpiece using such a cutting blade, it is necessary to cut the saw of the cutting blade in order to eliminate clogging of the cutting layer by chips. It is necessary to make the mesh rough, and the diameter of the cutting blade inevitably becomes large, and the thickness of the cutting blade becomes thin relative to the size of the cutting blade. Therefore, while cutting a workpiece, the cutting blade may bend in a direction crossing the direction in which the workpiece is cut, or the roughness of the cutting blade may cause the skin of the cutting blade, that is, the cut surface of the plate to be smooth. do not become. Furthermore, due to this deflection, the cutting blade comes into contact with the cut surface of the plate material with great resistance, generating heat. Depending on the degree of this heat generation, the cutting blade may be deformed, and the cut surface of the plate may be
It becomes even less smooth. In this way, if a thin plate is formed by simply cutting a workpiece with a cutting blade, the precision of the cut surface of the plate will deteriorate.

Therefore, the main purpose of this invention is to prevent the deflection of the cutting blade when manufacturing plate material from a workpiece, and to prevent the bending of the cutting blade even when using a fine-grained cutting blade.
To provide a machine exclusively for thinning without clogging of cutting grooves due to chips.

(Means for Solving the Problems) The present invention is a thinning machine for cutting a workpiece to form a thin plate material, and the present invention is a thinning machine for cutting a workpiece to form a thin plate material. at least one pair of plate-shaped grooving blades whose main surfaces are arranged parallel to one side of the workpiece, and whose cutting edges are arranged vertically at a predetermined interval with respect to the workpiece. a leading groove forming means for forming a leading groove in the workpiece; and a leading groove forming means that is spaced apart from one side of the workpiece by a distance corresponding to the thickness of the plate material, and whose main surface is located parallel to one side of the workpiece, and located on the same plane as the front-rear direction plane passing through the center point of the main surface of the grooving blade, and furthermore, located at the rear of the grooving blade, and arranged at a predetermined interval above and below the workpiece; A cutting means for cutting a workpiece, a plate holding means for sucking a thin plate formed from the workpiece, and at least one of the cutting means and the plate holding means. By changing the relative positions of the cutting means and the plate holding means in a direction parallel to the front-rear plane passing through the center point of the main surface of the cutting blade, the cutting blade can be used to thin the workpiece. This is a special machine for thinning, which includes a displacement means for pulling it across.

(Function) The grooving blade of the advance groove forming means is arranged vertically with respect to the workpiece at a predetermined interval, and the cutting blade of the cutting means is arranged in a front-rear direction plane passing through the center point of the main surface of the grooving blade. placed at the rear on the same plane as the
For this reason, a leading groove is formed in the workpiece by the leading groove forming means, and along this leading groove,
A cutting blade of the cutting means cuts the workpiece. At this time, the cutting blade of the cutting means is guided in the cutting direction by the leading groove. Further, since cutting is performed after cutting chips are discharged to the outside by forming the preceding groove, the amount of cutting chips generated during cutting is reduced.

(Effects of the Invention) According to the present invention, since the preceding machine guides the cutting blade in the cutting direction, there is no deflection of the cutting blade.
Therefore, the contact resistance between the cut surface of the plate material and the cutting blade can be suppressed, heat generation of the cutting blade can be suppressed, and deformation of the cutting blade can be prevented. In addition, since the amount of chips is small,
A finely serrated cutting blade can be used. Therefore, for these reasons, the cut surface of the workpiece is formed to be smooth.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Embodiment) Figures 1A to 1D show an embodiment of the present invention, in which Figure 1A is a perspective view thereof, Figure 1B is a perspective view of a main part thereof, and Figure 1C is a side view thereof. FIG. 1D is a front view of the main part thereof.

First, the overall configuration of the thinning machine 10 of this embodiment will be explained.

This thinning machine 10 has a long base 12 in the front and back.
including. The base 12 is provided with rails 14a and 14b on both sides parallel to its longitudinal direction, respectively. These two rails 14a and 14
On b, there is a frame 16 that constitutes a part of the mounting means.
is mounted so as to be movable back and forth on the rails 14a and 14b by a number of rollers (not shown) provided at the bottom thereof.

The frame 16 includes a rectangular parallelepiped-shaped main member 18. Support members 20 and 22 are fixed to the front and rear lower portions of the main member 18, and the above-mentioned rollers (not shown) are fixed to the lower portions of the support members 20 and 22. ) is rotatably attached. Therefore, this frame 1
6 etc. can be moved forward or backward.

Furthermore, on the main member 18 of this frame 16,
Table members 24 and 26 are fixedly spaced from each other in the front and back. These table members 24 and 26 are for placing a workpiece A, such as a piece of wood, thereon.

In addition, at the front and rear left ends of the main member 18 of the frame 16,
Frame members 28 and 30 support support members 20 and 2
2, so as to protrude to the left side of the main member 18,
Each is fixed.

On the other hand, a hollow square columnar abutment member 32 constituting a part of the plate material suction holding means is attached to the frame member 2 of the frame body 16.
8 and 30 so as to be displaceable in the left and right direction. This abutting member 32 is configured to contact the left side of the workpiece A on the table members 24 and 26 with its right side.
This is to determine the horizontal position of the That is, as shown in FIG. 1B, convex members 34 and 36 are fixed to the lower part of the front and rear ends of the abutment member 32, extending to the right from there, and the upper ends of the frame members 28 and 30 are fixed to the left and right. Extending grooves 38 and 4
0 is formed and the convex members 34 and 36
are inserted into grooves 38 and 40, respectively. Therefore, the abutting member 32 is the frame member 28
and 30 or table members 24 and 26
It can be displaced in the left-right direction.

Furthermore, screw holes 34a and 36a are formed in these convex members 34 and 36, and bolts 42 and 36a, which are rotatably provided at the right ends of frame members 28 and 30, are inserted into these screw holes 34a and 36a. 44 are screwed together. Therefore, by turning the bolts 42 and 44 clockwise or counterclockwise, the abutting member 32 can be displaced in the left-right direction.

In addition, the frame members 28 and 30 have a piece member (not shown) formed on the left side of the grooves 38 and 40. and the grooves 38 of the frame members 28 and 30.
Thick members 46 and 48 are inserted into and 40, respectively, so as to contact the piece members. These thick members 46 and 48 are connected to the convex member 3
4 and 36, that is, the abutting member 32, to facilitate the horizontal positioning of the contact member 32. When the convex members 34 and 36 are displaced to the left, the left end surfaces of the convex members 34 and 36 are Thickness member 46
and 48. Thereby, the convex members 34 and 36, that is, the abutment member 32, are positioned at predetermined positions in the left-right direction. Note that if the thick members 46 and 48 are replaced with thick members of other thicknesses, the positions of the convex members 34 and 36, that is, the abutment member 32 in the left and right direction can be arbitrarily changed and the positions can be easily determined. be able to. Thereby, the distance from the left side surface of the saw to the right side surface (suction hole 50) of the aluminum surface plate fixed to the abutment member 32 can be set. That is, this allows the finished thickness of the drawn plate to be set. Thickened members 34 and 36 are also formed with thumb bars extending upwardly from their tops to facilitate insertion into and removal from grooves 38 and 40.

Furthermore, a suction hole 50 is formed in the center of the right side of the contact member 32. This suction hole 50
For example, 2 to 5 mm apart, for example.
It is shaped like a comb with a width of 2.3mm. Further, a circular hole 52 is formed in the rear end surface of the contact member 32,
A suction device (not shown) such as a blower device or a vacuum pump is connected to this circular hole 52 via a hose 54 . Therefore, by operating the suction device, suction force can be generated in the suction hole 50 of the contact member 32. This suction force attracts the left side surface of the workpiece A on the table members 24 and 26, so that the workpiece A is suctioned and held by the abutment member 32.

On the other hand, on the table members 24 and 26, a hollow square column-shaped abutting member 60, which constitutes a part of the workpiece suction and holding means, is provided so as to face the abutting member 32. In this case, table member 2
4 and 26 are provided with grooves 62 extending left and right.
and 64 are formed, and a convex portion 6 that can be fitted into the grooves 62 and 64 is formed at the front and rear lower portions of the contact member 60.
6 and 68 are formed, and these convex parts 6
6 and 68 are fitted into grooves 62 and 64, respectively. Therefore, this contact member 60 can be displaced in the left-right direction.

Furthermore, as shown in FIGS. 1A and 1B, a cylinder 70 for displacing the abutment member 60 in the left-right direction is mounted between the table members 24 and 26 with the rod 70a facing the right side. 16 main members 18. The tip of the rod 70a of this cylinder 70 is fixed to a piece member 72 that protrudes rightward from the right side of the abutment member 60. Therefore, rod 7 of cylinder 70
By expanding and contracting Oa, the abutting member 60 is displaced in the left-right direction. In this case, when the rod 70a of the cylinder 70 is retracted, the abutment member 60 is displaced to the left, and the left side of the abutment member 60 comes into contact with the right side of the workpiece A on the table members 24 and 26. Therefore, the workpiece A on the table members 24 and 26 is held between the abutting members 32 and 60.

Furthermore, in the contact member 60, a comb-shaped suction hole 74 similar to the suction hole 50 is formed on the surface facing the suction hole 50 of the contact member 32, and a circular hole 76 is formed on the rear right side surface of the contact member 60. In this circular hole 76,
A suction machine (not shown) is connected via hose 78.

Therefore, the left and right sides of the workpiece A on the table members 24 and 26 are attracted by the contact members 32 and 60, and the workpiece A
is held under suction.

Next, a fixing means for fixing the abutment member 60 to the table members 24 and 26 of the frame body 16 will be explained. This fixing means consists of two cylinders 8
0 and 82, one cylinder 80 and its related components will be described in detail with particular reference to FIGS. 2A and 2B.

The cylinder member 80 is attached downwardly to the front right side of the abutting member 60 by the mounting piece 84 .
is fixed to. Rod 80a of this cylinder 80
is rotatably attached to one end of an arm member 88 via a connecting member 86, particularly as shown in FIG. 2A. The other end of this arm member 88 is rotatably attached to a support member 90 extending downward from the abutment member 60. Furthermore, a bar member 92 is formed extending upward from the center of the arm member 88. This rod member 92 is inserted into a bearing 94 provided at the lower part of the abutment member 60. Therefore, when the rod 80a of the cylinder 80 is expanded or contracted, the arm member 88 is swung up and down using the other end as a fulcrum.
Furthermore, the rod member 92 is displaced up and down.

Moreover, as shown in FIGS. 1A and 1B,
An auxiliary table member 96 is mounted on the main member 18 of the frame 16 spaced rearwardly from the table member 24 . Then, the above-mentioned rod member 92
is disposed between the table member 24 and the auxiliary table member 96, as shown in FIG. 2B.

Further, a support plate 98 is inserted through the rod member 92, and this support plate 98 is fixed to the lower part of the rod member 92. A lining member 99 is formed on the side of the upper surface of this support plate 98 . This lining member 9
9 is the collar member 24 of the table member 24 and the auxiliary table member 96, especially as shown in FIG. 2B.
a and 96a. Further, the lining member 99 is formed of a relatively non-slip material such as an inorganic lining or an organic lining.

Therefore, when the rod 80a of the cylinder 80 is retracted, the lining member 99 is moved against the table member 2.
4 and the collar member 24a of the auxiliary table member 96
and 96a, whereby the lining member 99, that is, the abutment member 60 can be fixed to the table member 24 or the like.

Note that the other cylinder 82 is fixed to the abutting member 60 downwardly at the rear right side of the abutting member 60 by an attachment piece 85 . And this cylinder 8
Related members similar to those described above, such as the connecting member 86, arm member 88, support member 90, rod member 92, bearing 94, and auxiliary table member 96, are provided in connection with 2. Therefore, the abutment member 60 can be fixed to the table member 26 or the like by contracting the rod 82a of the cylinder 82 as well. That is, by contracting the rod 70a of the cylinder 70, the workpiece A is held between the abutting members 32 and 60 and held by suction by the suction machine. And cylinder 80
and 82 rods 80a and 82a are retracted, and the abutment member 60 is
6. Stable cutting can be performed by cutting the workpiece A while it is fixed to the auxiliary table member 96 or the like.

Next, a description will be given of the leading groove forming means for forming the leading groove on the workpiece A and the cutting means for cutting the leading groove, which are the main components of the present invention.

The advance groove forming means includes two motors 100a and 102a, and these motors 100a and 102a are attached to a support 104a provided at the upper left center of the base 12. In this case, the motors 100a and 102a are fixed to the support 104a, with their axes facing left, side by side, one above the other.

A rotatably provided shaft 106a is provided at the lower part of the support 104a, and a rotatably provided shaft 108a is provided directly above the shaft 106a. These axes 106
For example, plate-shaped circular saw teeth 109a and 109b are fixed to the right ends of a and 108a, respectively, as grooving blades.

These circular saw teeth 109a and 109b are arranged between the abutting member 32 and the table members 24 and 26, and are also arranged so that their main surfaces are parallel to the right side surface of the abutting member 32. Further, as shown in FIG. 3, the circular saw teeth 109a and 109b are located on the same plane, have the same thickness and diameter, are above and below the workpiece A, and have their cutting edges on the workpiece A. They are arranged at intervals of approximately half the thickness of A.

On the other hand, the cutting means includes two motors 100b and 102b, which are attached to a support 104b provided at the upper right of the center of the base 12. In this case, the motors 100b and 102b are arranged one above the other, with their axes directed to the left, and
4b. A rotatably provided shaft 106b is provided at the bottom of the support 104b, and a rotatably provided shaft 108b is provided directly above the shaft 106b.
At the right end of these axes 106b and 108b,
Each has circular saw teeth 110 and 112 located rearward on the same plane as the front-back plane passing through the respective center points of circular saw teeth 109a and 109b. The circular sawtooth 110 is located parallel to and behind the shaft 106a, and is rotatably provided on the shaft 1.
It is fixed to 06b. In addition, circular sawtooth 112
is located parallel to and behind the shaft 108a, and is fixed to a rotatably provided shaft 108b.
The circular saw teeth 110 and 112 have the same thickness and diameter, and as shown in FIG. 3, the upper end of the lower circular saw tooth 110 is positioned slightly above the lower end of the upper circular saw tooth 112. , placed. For this reason, workpiece A is first prepared with circular saw teeth 10
A leading groove is formed at 9a and 109b, and cutting is to be performed along this leading groove with circular saw teeth 110 and 112. Therefore, the cutting is performed after the chips generated by the formation of the preceding groove are discharged to the outside, so that the amount of chips produced by cutting is reduced.
For this reason, a finely serrated cutting blade can be used. Note that these circular saw teeth 109a, 109
b, 110 and 112 have a thickness of, for example
It is formed with a diameter of 0.5mm to 2.8mm, but the circular sawtooth is 109.
The thickness of a and 109b is that of circular saw teeth 110 and 1.
12 or less in thickness. Further, the saw teeth of the circular saw teeth 110 and 112 are similar to the saw teeth of the circular saw teeth 109.
Finer than a and 109b may be used. Therefore, the leading groove is the same or slightly narrower than the thickness of the circular saw teeth 110 and 112. Therefore, the circular saw teeth 110 and 112 are guided in the cutting direction without deflecting in the direction crossing the cutting direction, and the cut surface of the workpiece A is smooth because it is cut with the fine circular saw teeth. become.

On the other hand, pulleys 114a and 116b are fixed to the shafts of the motors 100a and 102a, and pulleys (not shown) are fixed to the left ends of the shafts 106a and 108a. (not shown), a belt 120a is placed thereon, and a belt 122a is also placed on the pulleys (not shown) of pulleys 116a and 108a. Similarly, the shafts of motors 100b and 102b have
Pulleys 114b and 116b are fixed, and pulleys (not shown) are fixed to the left ends of the shafts 106b and 108b, and a belt 120b is attached to the pulley 114b and the pulley (not shown) of the shaft 106b. A belt 122b is also looped around the pulley 116b and a pulley (not shown) of the shaft 108b. Therefore, when motors 100a and 102a are operated, their rotation is caused by belts 120a and 120a.
2a through shafts 106a and 108a to circular saw teeth 109a and 109b, causing them to rotate. Similarly, motors 100b and 10
2b, the rotation will cause the belt 120b to rotate.
and 122b by axes 106b and 108
b to the circular saw teeth 110 and 112, causing them to rotate. Note that this rotation direction is
It is set so that it is opposite to the moving direction of workpiece A, that is, so-called up-cut. For this reason, chips generated by cutting tend to come out to the outside.

Next, in this state, the frame 16 and the like are displaced backward or forward, and the table members 24 and 26 are
On the upper workpiece A, circular saw teeth 109a and 1
09b, and then the circular saw teeth 110 and 112. Then, a leading groove is first formed on the workpiece A by the circular saw teeth 109a and 109b, and the workpiece A is cut along this leading groove by the circular saw teeth 110 and 112, thereby forming a thin plate material. be done.

In addition, as shown in FIG. 1D, these circular saw teeth 109a, 109b, 110 and 112 have
Covers 109c, 109d,
110a and 112a are provided, and hoses 124a, 124b, 126a and 126b are provided to communicate the inside of these covers with a suction machine (not shown). Therefore, when forming the preceding groove with the circular saw teeth 109a and 109b, and when forming the preceding groove with the circular saw teeth 110 and 112, the work piece A is
When cutting, the chips generated are removed by suction by a suction machine.

Next, the displacement means for displacing the frame 16 and the like back and forth as described above will be explained.

This displacement means includes a motor 130 fixed to the front upper part of the base 12. A gear 132 is fixed to the shaft of this motor 130. A chain 134 is then attached to this gear 132. One end of the chain 134 is fixed to the front part of the support member 20 of the frame body 16, and the rear part of the chain 134 is attached to a gear 136 rotatably provided at the rear part of the base 12, as shown in FIG. 1C. The other end is fixed to the rear part of the support member 22 of the frame 16. Therefore,
If the motor 130 is rotated forward or backward,
The frame 16 and the like are pulled forward or backward through the chain 134 and are displaced forward or backward.

In this way, by displacing the frame 16 and the like back and forth, the table members 24 and 2 can be moved as described above.
The circular saw blade 11 of the cutting means is placed on the workpiece A on 6.
0 and 112 can be crossed. Thereby, the workpiece A can be cut to form a thin plate material.

Next, an example of use of the special thinning machine 10 of this embodiment will be explained.

First, the right side of the contact member 32 and the circular sawtooth 109
The thickness of the plate material forming the distance from the left side of a, 109b, 110 and 112, for example, 2 mm to 10 mm.
Adjust the interval to . In this case, adjust the bolts 42 and 44 in FIG. 1B so that the abutment member 32
This is done by displacing left and right. In addition, when performing this adjustment, if the thickness members 46 and 48 of a predetermined thickness are inserted into the grooves 38 and 40 of the frame members 28 and 30 in advance, the contact member 3
It is only necessary to displace the abutment member 32 to the left until the two convex members 34 and 36 abut against the thick members 46 and 48, and therefore, the adjustment can be easily performed. That is, if the thickness members 46 and 48 are thin, the thickness of the thinly formed plate material will be thicker, and if the thickness members 46 and 48 are thicker,
The thickness of the thinly drawn plate material becomes thinner.

Further, the circular saw teeth 109a, 109b, 110, and 112 can be finely adjusted left and right by male and female threads.
The center of thickness of the circular saw teeth of b, 110 and 112 is
They are fixed so that they are located on the same plane.

Further, the interval between the upper and lower tooth tips of the circular saw teeth 109a and 109b is set to approximately half the thickness of the workpiece A.

Next, a workpiece A made of a material such as wood is placed on the table members 24 and 26.

Then, the rod 70a of the cylinder 70 is retracted, the abutting member 60 is displaced to the left, and the workpiece A is positioned between the abutting members 32 and 60. In this case, the contact members 32 and 6
0 suction holes 50 and 74 to generate suction force,
Workpiece A is suctioned and held by abutting members 32 and 60.

Additionally, rods 80 of cylinders 80 and 82
By contracting a and 82a, the abutment member 60 is fixed to the table members 24, 26 and the auxiliary table member 96. In this way, the contact member 6
0 to the table members 24, 2 fixed to the frame 16
6 and the auxiliary table member 96 are:
When the workpiece A is cut, the abutting member 6
This is to prevent contact resistance between the cut surface of workpiece A and the main surfaces of circular saw teeth 110 and 112 from becoming unintentionally large due to displacement of workpiece A and workpiece A to the left by cylinder 70.

Next, the motors 100a, 100b of the cutting means,
102a and 102b are activated, and the circular saw blade 10
9a, 109b, 110 and 112 are rotated.

Then, the motor 130 of the displacement means is rotated,
The frame body 16 and the like are displaced from the state shown by the solid line in FIG. 1C, that is, from the front to the state shown by the one-dot chain line in FIG.
9a and 109b followed by 110 and 112
A thin board with a thickness of, for example, 2 mm to 10 mm is formed by crossing it.

In this case, since the plate material is formed by cutting the workpiece A, a larger portion of the workpiece A can be used than when the plate material is formed by scraping off the surface of the workpiece A.

Further, a leading groove is first formed on the upper and lower surfaces of the workpiece A, and cutting is performed along this groove. For this reason, cutting is performed after cutting chips are removed by forming the preceding groove, so that the amount of cutting chips generated during cutting is reduced. Furthermore, since the cutting is done with a sharp cut, the chips are likely to come out. These prevent chips from getting stuck in the grooves created by cutting, so a fine-toothed cutting blade can be used.

Further, since the thickness of the circular saw teeth 109a and 109b is configured to be less than the thickness of the circular saw teeth 110 and 112, the width of the leading groove is the same as that of the circular saw teeth 109b.
The thickness is the same as or less than that of Nos. 10 and 112. Therefore, the circular saw teeth 110 and 112 are
It is guided in the cutting direction by the leading groove and does not bend in the direction crossing the groove created by cutting. Moreover, the plate material is the suction hole 5 of the abutting member 32.
Since the suction grip is held at zero, the plate material will not bend in the direction intersecting the cut surface. Therefore, the contact resistance between the cut surface of the plate material and the circular saw teeth 110 and 112 does not become large, and the circular saw teeth 110 and 112
fever can be suppressed.

By being able to use such a fine-grained cutting blade and by being able to cut a workpiece while constantly correcting the deflection of the board and the circular saw teeth 110 and 112, the cut surface of the board can be cut easily. is formed smoothly. Therefore, a thin plate material with a beautiful cut surface that does not require finishing such as planar finishing or surface finishing can be obtained, and it is possible to finish the plate by sanding, for example, without requiring finishing such as planar finishing.

Further, after the frame 16 and the like are displaced rearward to form a thin plate, the contact piece 140 of the support member 22 contacts the limit switch 142 at the rear, as shown by the dashed line in FIG. 1C. , the motor 130 of the displacement means and the suction machine of the suction hole 50 are stopped, and the plate material suctioned and held by the abutment member 32 is released (dropped). At this time, the motors 100b, 102b of the cutting means and the motors 100a, 102a of the preceding groove forming means remain rotating. Further, the suction machine of the suction hole 74 remains in operation, and the workpiece A is in a state of being attracted by the suction hole 74.

and rods 80 of cylinders 80 and 82.
By extending a and 82a, the abutment member 60 is released from the table members 24, 26 and the auxiliary table member 96, and the cylinder 7
By extending the rod 70a of 0, the abutting member 60 that suction-holds the workpiece A is displaced to the right together with the workpiece A. In this way, the workpiece A is displaced to the right when the frame 16, workpiece A, etc. are returned to the front in the next step.
This is to prevent careless contact with a, 109b, 110, and 112.

Next, the motor 130 of the displacement means is rotated in the reverse direction,
The frame body 16 and the like are displaced forward and returned to their original states.
In this state, as shown by the solid line in FIG. 1C, the contact piece 144 of the support member 20 contacts the front limit switch 146, and the motor 130 is stopped, thereby causing the frame 16, workpiece A, etc. will be stopped.

Furthermore, in order to cut the remaining workpiece A to form a thin plate material, the workpiece A is positioned so as to be sandwiched between the contact members 32 and 60 (the suction machine of the suction hole 50, the suction The steps after the above-mentioned step (which works together with the suction machine of the hole 74) may be repeated in order.

According to this invention, the circular saw blade 110 serves as a cutting blade.
and 112 are circular saw teeth 109a serving as grooving blades;
The workpiece A is cut along the leading groove formed by and 109b. Therefore, the cutting is performed after the chips generated by the formation of the preceding groove are discharged to the outside, so the amount of chips generated during cutting is reduced, and for this reason, a fine-grained cutting blade is used. be able to.

Further, since the thickness of the leading groove is smaller than or equal to the thickness of the circular saw teeth 110 and 112, the circular saw teeth 110 and 112 are guided in the cutting direction without being bent in the direction crossing the cutting direction, and the workpiece A is Since it is sucked into the suction hole 74 of the contact member 60 and held by the contact member 60, the workpiece A does not bend in the direction intersecting the cut surface thereof, like the plate material to be formed. Moreover, since the workpiece A is cut with fine circular saw teeth, the cut surface of the workpiece A becomes smooth. The contact resistance between the cut surface of the workpiece A and the circular saw teeth 110, 112 does not increase, and heat generation of the circular saw teeth 110, 112 can be suppressed. Therefore, a beautiful cut surface of the workpiece can be formed without requiring finishing such as planar finishing or surface finishing, and the cut surface can be finished with sanding, for example.

Further, according to this embodiment, the workpiece A is sucked into the suction hole 74 of the abutting member 60 and held by the abutting member 60, so that the workpiece A intersects with the cut surface of the plate material to be formed. It will not bend in the direction you want.

Furthermore, in this embodiment, since the side surfaces of the workpiece A are held by suction, the workpiece A is held by suction compared to the case where the upper and lower surfaces of the workpiece A are held using a holding device such as a clamp. Even if the thickness is thinner than that held by the tool, it can be cut.

In addition, in the above-mentioned embodiment, the suction hole 5 for suctioning and holding the plate material and workpiece A to be formed is
0 and 74 are formed in a comb-like shape, but the suction holes are, for example, circular holes 50a with a diameter of 3 to 5 mm, arranged vertically and horizontally on the side surface of the contact member 32, as shown in FIG. It may be formed by arranging a large number of them, and the shape, size, and number can be changed arbitrarily.

Further, in the above embodiment, in order to fix the abutting member 60 to the table members 24 and 26, etc.,
Although a fixing means including cylinders 80 and 82 was used, instead of this fixing means, for example, as shown in FIG. A is fixed, thereby abutting member 60
may be fixed.

This pressing means 150 includes two support members 152.
, and these support members 152 support the main member 1 of the frame 16 before and after the table members 24 and 26.
It is fixed on top of 8. In addition, two piece members 154
are formed extending from above the support member 152 to the left side. A cylinder 156 is fixed on each of these pieces 154 with their rods 156a facing downward. And the rod 1 of the two cylinders 156
56a, the presser member 158
are fixed to the lower ends of the two rods 156a.
Therefore, rod 1 of these cylinders 156
By expanding and contracting 56a, the presser member 15
8 can be moved up and down. If the presser member 158 is displaced downward and the lower surface of the presser member 158 is brought into contact with the upper surface of the workpiece A on the table members 24 and 26, the workpiece A
The table members 24 and 26 and the holding member 158
The table members 24 and 2 are sandwiched between the table members 24 and 2.
It is held on 6.

In order to smoothly displace the presser member 158 in the vertical direction, guide members 154a are formed extending downward from the piece member 154, and these guide members 154a are connected to the presser member 1.
It is slidably inserted into the front and rear ends of 58.

Further, in the above embodiment, in order to cut the workpiece A, the circular saw teeth 109a, 109b, 11
0 and 112 are fixed at predetermined positions, and the workpiece A is displaced with the suction holding means such as the contact members 32 and 60 that suction-holded the workpiece A rearward, but in this invention, the direction is free. Alternatively, at least one of the workpiece and the cutting means may be displaced to cause the workpiece to traverse the cutting blade.

[Brief explanation of the drawing]

1A to 1D show an embodiment of the present invention, FIG. 1A is a perspective view thereof, FIG. 1B is a perspective view of a main part thereof, FIG. 1C is a side view thereof, and FIG. Figure 1D is a front view of the main part. Second
Figures A and 2B show the fixing means of the embodiment shown in Figures 1A to 1D, with Figure 2A being an illustration of it seen from the front, and Figure 2B being an illustration of it seen from the right. It is a diagram. FIG. 3 is an illustrative view showing the rotational direction of the circular saw tooth of the embodiment shown in FIGS. 1A to 1D and the positional relationship between the circular saw tooth and the workpiece. FIG. 4 is a perspective view showing another example of the suction hole of the abutting member. FIG. 5 is a front view of main parts showing a modification of the invention. In the figure, 12 is a base, 14a and 14b
is a rail, 16 is a frame body, 24 and 26 are table members, 32 and 60 are contact members, 70, 80
and 82 are cylinders, 70a, 80a and 8
2a is a rod, 72 is a piece member, 100a, 100
b, 102a, 102b and 130 are motors;
109a, 109b, 110 and 112 are circular saw teeth, 132 and 136 are gears, and 134 is a chain.

Claims (1)

[Scope of Claims] 1. A thinning machine for cutting a workpiece to form a thin sheet material, the thinning machine having a thinning machine that is spaced apart from one side of the workpiece by a distance corresponding to the thickness of the sheet material; at least one pair of plate-shaped grooving blades, the main surface of which is arranged parallel to one side of the workpiece, the cutting edge of which is arranged vertically at a predetermined interval with respect to the workpiece; A leading groove forming means for forming a leading groove in the workpiece, the main surface thereof being located at a distance corresponding to the thickness of the plate from one side of the workpiece, and Located on the same plane as the front-back plane passing through the center point of the main surface of the grooving blade, located at the rear of the grooving blade, and arranged at a predetermined interval above and below the workpiece. a cutting means for cutting the workpiece, having at least a pair of plate-shaped cutting blades, a plate holding means for holding the thin plate formed from the workpiece, and the cutting means and Provided in association with at least one of the plate holding means, changing the relative position of the cutting means and the plate holding means in a direction parallel to a front-back plane passing through the center point of the main surface of the cutting blade. , a machine exclusively for thinning, comprising a displacement means for causing the cutting blade to cross the workpiece so as to thin the workpiece. 2. The thinning machine according to claim 1, wherein the thickness of the thinning blade of the advance groove forming means is less than or equal to the thickness of the cutting blade of the cutting means. 3. The thinning machine according to claim 1, wherein the pair of groove cutting blades are spaced apart by approximately half the thickness of the workpiece. 4. The thinning machine according to any one of claims 1 to 3, wherein the plate holding means includes an abutting member that abuts one side of the workpiece. 5. The thinning device according to any one of claims 1 to 4, wherein the displacement means includes means for displacing the plate holding means in a direction parallel to the main surface of the cutting blade. Dedicated machine. 6. The means for displacing the plate material holding means includes: a frame body to which the abutment member is fixed and on which the workpiece is placed; and a frame body parallel to the main surface of the cutting blade. 6. The thinning machine according to claim 5, further comprising a rail for supporting the thinning machine so as to be movable in the direction. 7 Workpiece holding means for holding the workpiece when the workpiece is cut by fixing the other side surface of the workpiece in a direction intersecting the main surface of the cutting blade of the cutting means; A dedicated thinning machine according to any one of claims 1 to 6, comprising: 8. The workpiece holding means includes an abutment member that abuts the other side surface of the workpiece, and the abutment member is fixed to the frame so as not to move during cutting of the workpiece. A special thinning machine according to claim 7, which is fixed to a member.